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 <head>
  <title>CSS Test: Margin Boxes - Top</title>
  <link rel="author" title="Tom Clancy" href="mailto:tclancy@revenution.com"/>
  <link rel="help" href="http://www.w3.org/TR/css3-page/#margin-boxes"/>
  <meta name="flags" content="paged" />
  <meta name="assert" content="If the top-center box has content, then the outer widths of the other two boxes are equal to each other."/>
  <style type="text/css"><![CDATA[
   @page {
   		margin: 0.5in;
   		@top-left {
			content: "";
			border-left: 2pt solid black;
		}
		@top-right {
			content: "";
			border-right: 2pt solid aqua;
		}
   		@top-center { 
			content: "";
			margin: 0;
			border-left: 2pt solid black;
			border-right: 2pt solid aqua;
		}
   }
  ]]></style>
 </head>
 <body>
  <div>The distance between the blue lines must be the same as the distance between the black lines. You can test this by folding the paper in half, length-wise.</div>
 </body>
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